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Ppt on tribology.pp


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Ppt on tribology.pp

  1. 1. 1 Tanvir L. Shaikh B. E. Mechanical G.H.R.C.E.M. TRENDS IN TRIBOLOGYTRENDS IN TRIBOLOGY
  3. 3. Tribology is the science and engineering of interacting surfaces in relative motion 3 SO WHAT IS TRIBOLOGY? Tribology tries to describe everything that happens when things rub together
  4. 4. HIGH FRICTION 4 Space shuttle Columbia 2003 destroyed on re-entry. Due to thermal protection system failure frictional heating up caused an explosion.
  5. 5. LOW FRICTION 5Good Bad
  6. 6.  In Sport TRIBOLOGY’S ROLE 6
  7. 7. WHERE IS TRIBOLOGY? 7  Mechanisms: Gears, bearings, rail wheels
  8. 8. WEAR  What is wear? It’s the removal of material from a solid surface by the action of another surface. 8
  9. 9. LUBRICATION Why do we need it? ↓ wear remove heat and contamination  lower the friction  prevent wear 9
  10. 10. LUBRICATION OF ENGINE  Lubricant extracted from the piston assembly of a gasoline engine has been chemically analysed to determine the level of degradation and type of volatile carbon containing species. 10 Sump 1 Valve Train Sump 2 Piston Assembly Crank Shaft Piston Sump
  11. 11. RECENT RESEARCH  Improvement of journal bearing operation at heavy misalignment using bearing flexibility and compliant liners. 11  Tribological surface coatings  Lubrication and Life of Polymer Rolling Bearings  Bearing film thickness analysis
  12. 12.  In U. S., there is Argonne's Tribology Laboratory to conduct research on advanced tribological systems (surface engineered materials, lubricants, fuels and additives).  The Lab's "toolbox" includes : RECENT RESEARCH IN U. S. Optical Profilometer To study wear in engines and drivelines, the amount of material loss is measured using the optical profilometer MicroXAM surface profiler 12 Multi-Specimen Tester This machine can do a wide variety of severe-contact tribological tests that assess the friction and wear- prevention properties of lubricants.
  13. 13. THANK YOU!!! 13